What is the final electron acceptor in the electron transport chain?
Accordingly, what is the final electron acceptor in the electron transport chain quizlet? The final acceptor of electrons in the electron transport chain is molecular OXYGEN.
What is the electron transport chain in the mitochondria?
The mitochondrial electron transport chain (ETC) consists of five protein complexes integrated into the inner mitochondrial membrane. The TCA cycle in the mitochondrial matrix supplies NADH and FADH2to the ETC, each of which donates a pair of electrons to the ETC via Complexes I and II respectively.
What is the role of the electron acceptor in mitochondria?
In mitochondria. Each electron donor will pass electrons to a more electronegative acceptor, which in turn donates these electrons to another acceptor, a process that continues down the series until electrons are passed to oxygen, the most electronegative and terminal electron acceptor in the chain.
What is the terminal electron acceptor in aerobic respiration?
In aerobic respiration, the terminal electron acceptor is oxygen, which combines with two protons and the gained electrons (from the electron transport chain) to form water. What is the final electron acceptor in oxidative phosphorylation?
Which is the terminal acceptor of electron?
oxygenIn biology, a terminal electron acceptor refers to either the last compound to receive an electron in an electron transport chain, such as oxygen during cellular respiration, or the last cofactor to receive an electron within the electron transfer domain of a reaction center during photosynthesis.
What is the identity of the terminal last electron acceptor of the mitochondrial electron transport system?
A copper-containing metalloenzyme, mitochondrial cytochrome c oxidase (COX), is the final electron acceptor in the mitochondrial electron transport chain and is required for aerobic ATP production.
What are the main electron donors for the mitochondrial electron transport pathway?
In eukaryotes, NADH is the most important electron donor. The associated electron transport chain is NADH → Complex I → Q → Complex III → cytochrome c → Complex IV → O2 where Complexes I, III and IV are proton pumps, while Q and cytochrome c are mobile electron carriers.
What is the final electron acceptor in the electron transport chain quizlet?
Oxygen is the final electron acceptor in the electron transport chain and is converted to water.
What is the final electron acceptor at the end of the electron transport chain when water is formed?
oxygen moleculeAt the end of the electron transport system, two protons, two electrons, and half of an oxygen molecule combine to form water. Since oxygen is the final electron acceptor, the process is called aerobic respiration.
Which is the terminal electron acceptor in aerobic respiration?
oxygenTo carry out aerobic respiration, a cell requires oxygen as the final electron acceptor.
Where would you find the electron acceptors of the electron transport chain?
mitochondriaOxygen is our terminal electron acceptor. We call this process respiration, specifically aerobic respiration. We breath in oxygen, our cells take it up and transport it into the mitochondria where it is used as the final acceptor of electrons from our electron transport chains.
What goes into mitochondrial electron transport?
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
Overview
Mitochondrial electron transport chains
Most eukaryotic cells have mitochondria, which produce ATP from reactions of oxygen with products of the citric acid cycle, fatty acid metabolism, and amino acid metabolism. At the inner mitochondrial membrane, electrons from NADH and FADH2 pass through the electron transport chain to oxygen, which provides the energy driving the process as it is reduced to water. The electron transpor…
Bacterial electron transport chains
In eukaryotes, NADH is the most important electron donor. The associated electron transport chain is NADH → Complex I → Q → Complex III → cytochrome c → Complex IV → O2 where Complexes I, III and IV are proton pumps, while Q and cytochrome c are mobile electron carriers. The electron acceptor providing the energy for this process is molecular oxygen.
In prokaryotes (bacteria and archaea) the situation is more complicated, because there are severa…
Photosynthetic
In oxidative phosphorylation, electrons are transferred from a moderate-energy electron donor such as NADH to a high-energy acceptor such as O2 through an electron transport chain, releasing the energy. In photophosphorylation, the energy of sunlight is used to create a high-energy electron donor which can subsequently reduce oxidized components and couple to ATP synthesis via proton translocation by the electron transport chain.
See also
• Charge-transfer complex
• CoRR hypothesis
• Electron equivalent
• Hydrogen hypothesis
• Respirasome
Further reading
• Fenchel T, King GM, Blackburn TH (September 2006). Bacterial Biogeochemistry: The Ecophysiology of Mineral Cycling (2nd ed.). Elsevier. ISBN 978-0-12-103455-9.
• Lengeler JW (January 1999). Drews G; Schlegel HG (eds.). Biology of the Prokaryotes. Blackwell Science. ISBN 978-0-632-05357-5.
External links
• Electron+Transport+Chain+Complex+Proteins at the US National Library of Medicine Medical Subject Headings (MeSH)
• Khan Academy, video lecture